Note that the actual dimen-sions will vary from these. Get the best deals on 20 Meter Antenna when you shop the largest online selection at eBay HUSTLER 5BTV 5*-Band HP Vertical HF Antenna 10 (11) 15 20 40 80 Meter. : 160 M Tower. They're ground. You may remember my homebrew 20/10 homebrew yagi that met its untimely end in an ice storm: It was pretty clear that a push-up pole with a rotor and full size beam was not going to be a workable situation, despite the antenna weighing only 18 lbs. If you listen to the DX activity on the Low bands, you'd be forgiven for thinking that you're wasting your time unless you have a 4 Square Array, 20 acres of Beverage antennae, a huge Amplifier, and a neck like an anvil. For greater than 15 watts (max 100), I use a 35 foot wire and a Balun Designs 9130sw 9:1 balun. A 6 Meter Moxon Antenna Discover 6 meters for the first time or enhance your existing operation with a rugged but portable version of this novel 2 element antenna. My first 20 meter delta loop was mounted kind of low to the ground, but it did okay. In this video, the antenna consists of a MFJ-1979 (1/4 wave 20-meter telescoping mast) a RadioWavz "Patriot 80: adjustable loading coil, a Hustler mast, and a MFJ-909 capacitive meter. Second was to be able to use some of the local 6 meter repeaters and third was to be able to use single side band when the band opens. Dipole Antenna Length Calculator. It is always a pleasure to peer into the working mind of another homebrewer and scrounger. Homebrew a wave ground plane antenna for meter band. This has 4 x sloping radials at 45 degrees with a feedpojnt up at about 7 meters in the air. The 160M station runs an FT-1000D to a homebrew 4-1000A. Guying is OK. H5ANX Mk4 Delta Loop Design By Sajid Rahim – E-Mail H5ANX (Bophuthatswana), ZS6EW and A22EW Antenna Background This antenna design was brought about by a need to have a simple effective and efficient antenna using simple materials. He is credited with original article in QST magazine. Â As published in antennex Dec. Antenna was originally a 66 foot (22+44 feet) horizontal with 25 feet of 450 ohm LL vertical. 15 MHz) operating over average soil (conductivity = 0. Today, I'm going to show you how you can easily build a homebrew 2 Meter ¼ Wave vertical antenna for under $10. It is 4″ shorter than an Antennacraft FM6. 25 meter 17 meters 2 meter 20 meters 40 meters 6 meter 70 cm accident activation antenna arrl at-897 plus atas-25 baofeng battery bio bioenno blog boy scouts callsign captain pomin rock chabot 2 benchmark chase contacts convention dbj-220 diamond dx ed fong efactor examination fm ft-857d ft-897 general class hallicrafters ham radio outlet. 8% for one side and 62. Radioteletype is used frequently on this band as well. The 5/8th wave vertical can be an excellent DX antenna, if a user is willing to operate it over a perfect or near perfect ground radial system. Today was a good antenna day. The original antenna was designed as a moderately short antenna for the 10 meter band. Used a G5RV for years then had a break of some 20 years. Quarter wave vs Half Wave vs Full Wave antenna. One is an EFHWA for 20-40 meters, and the other is a matching unit for the antenna. From David, N5IZU. Personally I prefer the Coke bottles for 10 to 17 meter antennas, and thicker wine bottles for 20 and 30 meters. Since the bandwidth of the antenna is wide the adjustment parameters are relatively broad and fine adjustment is not usually necessary. I like to use a home made current choke to keep RF from coming back on the feedline. 300 with my vertical and home brew Loop with DX opportunities such as GM4PPT (Richard) located in Scotland near to Ayr and one or two other interesting QSOs. RETURN TO HOME PAGE. Posted Jan 22, 2010, updated Jan 28, 2010. HF 20 Meter Vertical Antenna Description This is another homebrew antenna, for HF work. Get 160-6 Meters Coverage and 1500 Watt Operation with a single antenna! This MFJ-2990 is a 43-foot self-supporting vertical antenna that covers 160 through 6 Meters with the use of an antenna tuner. INITIAL RESULTS: Although the antenna can be used without a transmatch on 20-Meters, I preferred to leave my trusty Drake MN-4 in the line. ost commercial 2-meter repeater antennas with gain fall into two categories: collinear arrays and stacked element arrays, with gains ranging from 3 to 9 dB1. My Homebrew 3 Elements 20m Monoband Yagi I fixed my antena just 20 feets from the ground on my tower and running 80watts. Please note that the DX-EE is designed for 40-20-15-10 and works very well on the these bands; therefore, tuning it up on 17 came with no expectations other than to see if I could hear something. This was our in! The flagpole kit came from Lowes and cost $29. com profile. Enter the desired frequency. The overall length of the antenna assembly is 77 3/4 inches. If you use an SWR meter or an analyzer at the base of the antenna you will get the most accurate readings in a timely fashion. The large diameter yields broadbanded coverage of the 80 Meter Band. The 5/8th wave vertical can be an excellent DX antenna, if a user is willing to operate it over a perfect or near perfect ground radial system. In general, a large number of radials (even though some or all of them must be short) is preferable to a few long radials for a vertical antenna mounted on the ground. •Need lots of room, keep them away from metal objects like heaters and ducts •Wire antennas can be run near the peak of the roof inside the attic, bent in odd shapes to match the space available. A 40 meter horizontal loop may work on its harmonics. My 40 meter vertical cost me $13. PY1ZA Full Size Vertical antenna - 40-meter ham band (7 MHz) Last revision OCT-02-2017 This self-supported vertical antenna was made with aluminum tubes of 3 m in length that have an external diameter of 1 1/4" (32 mm) and a wall thickness of 1. Now I can work on the 10,15,20,40 and even on the 80 meters band without the use of a tuner. Noisier than horizontal antennas Easier to hide in antenna restricted areas (can be. I had a great idea that a full 5 element 20 meter beam in a fixed direction might reach Europe! Some day when the Sun Spots are helping the Ionisphere. It's a rugged homebrew multi-band trap vertical antenna that works the 10, 15, and 20 meter amateur radio bands". The first goal was to be able to talk to some of my friends on a 6 meter link that is within easy radio reach of my home. The 160M station runs an FT-1000D to a homebrew 4-1000A. I took my 20 foot short 40 meter vertical and tried using a spiral tuned counterpoise instead of my 24 radials. Buckmaster 7-Band 300 Watt OCF Dipole Antenna (Click for larger image) Our 7-Band antennas cover 80, 40, 20, 17, 12, 10, and 6 meters, with no tuner required! Wire antennas are a great simple way to work 40M and 80M rather than a noisy vertical antenna that requires horizontal radials. Â As published in antennex Dec. Loop Antennas for ham radio. This shortened easy-to-build vertical, with no-radials, is made from surplus military camouflage poles. My search for plans, didn't reveal anything. If so I will be working on a vertical array in the near future. So the kite was at 100 meters and the whole EndFed was up in the air like a vertical. Portable Vertical Antenna * WB9DLC Home Page * Background: When operating portable, one of the biggest challenges is providing an effective antenna. Here is a great article on building your own 3 foot diameter loop from copper pipe that will fit in the attic of a single story home. However, they did not prohibit a flagpole to show off the colors. My TX Antennae. (The lengths of the rope supports are misleading in the diagram, by the way. Note that the actual dimen-sions will vary from these. Wire is great - but needs supports of some type. 6-20 mtr & 6-40 mtr vertical antennas. See more ideas about Ham radio antenna, Ham radio and Ham. The DX Vertical is our non-stealth HF vertical antenna. Bob is the host of the popular Ham Radio broadcast, Ham Nation as seen on Twit TV and has featured and demonstrated this phased array system on two separate episodes. QRPGuys Portable 40-30-20m Tri-Band Vertical Antenna - $20 With permission from Joe Everhart, (N2CX), we have adapted his 40-30-20m portable vertical antenna design using switched toroids for the base loading inductance into a lightweight antenna for an easy outdoor setup. Its gain is about 2 dB on 40 meters and around 4 dB on 20 meters, but it will seem much higher due to the incredibly low angle radiation pattern. Quarter wave sloper. He is credited with original article in QST magazine. MultiBand Vee Beam-- Six Band One Element Beam 20 meters thru 6 From LA0HV Mystery Antenna 80M thru 6M - John P Basilotto, W5GI. The 34-foot, 22-ga. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. 10/15/20/40 Meter Vertical Antenna for Restricted Areas Operate 12, 17, 30, and 60 Meters with these MFJ Stealth WARC Band Vertical Antennas. There were a few goals for this antenna. This antenna is basically made from two lengths of emt conduit by N0EQ. 30 Meter and 17 and 6 meter ground plane antenna. 20 meter Vertical w/ Balun - hf-antenna. INITIAL RESULTS: Although the antenna can be used without a transmatch on 20-Meters, I preferred to leave my trusty Drake MN-4 in the line. At the higher HF frequencies, antenna sizes drop to 8–16 feet but. Just what you need to tweak your 600 Meter antenna. All of these things point to the EFHW as an ideal temporary antenna for the hiker or camper. Mounting the 20 metre delta loop The balun is attached to the top of the house using Para-cord and a pulley, the cord is tied off on a cleat. The antenna consists of. The first goal was to be able to talk to some of my friends on a 6 meter link that is within easy radio reach of my home. : 160 M Antennas. They receive quite well up through the 30 meter band, but at the higher frequencies they behave more as omnidirectional antennas. I have been using the antenna without the cover as a test antenna next to the bench but it's time to get it up on the roofline for some actual use. from many different materials, such as aluminum tubing, military-surplus cast-aluminum mast sections, tower sections or a wire hung from a conveniently placed tree. I decided to make my own vertical antenna after I saw the 5 band pipe vertical on hamuniverse. 4:1 at 144MHz rising to 1. High Performance 40 Meters Vertical. A hex beam for 20 – 10 meters is about 22 feet in diameter and weighs just under 30 pounds. Three new CB’s from Cobra!. Twenty meters designates the length of the particular radio wave used to transmit and receive voice and Morse code. The first goal was to be able to talk to some of my friends on a 6 meter link that is within easy radio reach of my home. That is a lot shorter than a standard 1/4 λ vertical. HF Vertical Antennas and Packages. They're ground. In general, a large number of radials (even though some or all of them must be short) is preferable to a few long radials for a vertical antenna mounted on the ground. 40 meters should be direct feed. See more ideas about Ham radio antenna, Ham radio and Ham. An Ultra-Simple 2-Meter Antenna You’ll get J-pole performance from this base station vertical antenna built with coat hangers and PVC pipe. MultiBand Vee Beam-- Six Band One Element Beam 20 meters thru 6 From LA0HV Mystery Antenna 80M thru 6M - John P Basilotto, W5GI. By attaching the center conductor of a coax feedline to the tubing, and the shield of the coax to a couple of radials from the base of the tubing you can load the vertical across quite a broad range of frequencies. com: 20 meter antenna. This is the remotely tunable unit, not the manually tuned unit shown in the above review. A resonant loop antenna will have a circumference of 1 λ. Other 160-Meter Antennas Some amateurs obtain good perfor- mance with end-fed 1/2-X wire antennas. QRPGuys Portable 40-30-20m Tri-Band Vertical Antenna - $20 With permission from Joe Everhart, (N2CX), we have adapted his 40-30-20m portable vertical antenna design using switched toroids for the base loading inductance into a lightweight antenna for an easy outdoor setup. Here's my homebrew 30 meter full quarter wave vertical. A 20 Meter Moxon Antenna Moxons work great — and they take up less space than full size two element Yagis. Do you have space for that size antenna? The typical support mechanism for a 20 – 10 meter hex beam is a steel push up mast that costs around $100. The design was purposely based on a telescoping fibre glass fishing rod as this allows it to be easily stowed away in the car. The antenna diameter is 2" OD at. Additionally, a metal support is often connected to the J-pole antenna, adding a third variable. Be sure to double check the continuity of the telescoping vertical from tip to tip after the length has been set. 80 Meter Shortened Inverted-L Bazooka Antenna- A DOUBLE BAZOOKA antenna is an extremely broad-banded Half Wave Antenna that can operate efficiently across an entire Ham band with little change to the SWR. In the mean time,I changed my 3-bands wire,for a 5-bands wire. Tuning the COM-20VA 20 Meter Vertical Antenna is straightforward and intuitive. The length of a full-wave antenna is given by the formula 1005 / frequency in MHz = total length of the loop. If you want it to work properly, you will need a means of measuring SWR, some trial and error, a little patience and at least half-a-brain to build this. HOME BREW 11 METER LOOP ANTENNA. September 2010 I started working on what I call my black box vertical antenna. (1) antenna mount with internal threads to accept 3/8″-24 antenna element. Now I can work on the 10,15,20,40 and even on the 80 meters band without the use of a tuner. So Rr is approximately 5 ohms. Could this be the lightest HF vertical in the world? Simple 5/8-Wave Vertical for 12 and 17 Meters QST April 1989, pp. Of course, with a vertical element of approximately 15′ this is a non-resonant antenna for the 10, 12, 15, 17 and 20 meter bands. 80 and 160m. I will definitely be adding a 40 meter to that soon. My 40 meter vertical cost me $13. : The 160 M Operating Position. With 10 ohms ground loss, the efficiency is 33% Assumes no trap/inductor losses Now your 100 watt transmit signal results in only. Operation on 6 and 2 Meters has been tried successfully as well. all in Bowel their today's and the the computer identify with taken when, like surface MDSCs. But I'm getting ready (saving up) to get a 10 meter ham radio and will be needing a base antenna for it. Hi, I want to build a 20 meter 1/4 wave vertical antenna. This is the remotely tunable unit, not the manually tuned unit shown in the above review. HF 20 Meter Vertical Antenna Description This is another homebrew antenna, for HF work. This is the setup I use at home. The purpose of this project is to design a simple multiband vertical dipole antenna for 20 meters and above, with a tuner, that will provide gain and a circular pattern on the higher bands. 000 Power Rating 2kw Antenna Lengths 10 Meters each leg 9 ft. HOME BREW 11 METER LOOP ANTENNA. are world renown for their unique characteristics in the 40 meter and 20 meter bands. 80 and 160m. With that said, go look up the cost of one that is being sold in the magazines and on the web. Now it was time to move forward and put up a delta loop for the higher bands. If an antenna works on 40 it should work on 15 as well. In general, a large number of radials (even though some or all of them must be short) is preferable to a few long radials for a vertical antenna mounted on the ground. The 34-foot, 22-ga. I used a 50pf vacuum variable. 2 m long radial, to give a vertical cut at 1/2l. By attaching the center conductor of a coax feedline to the tubing, and the shield of the coax to a couple of radials from the base of the tubing you can load the vertical across quite a broad range of frequencies. The higher gain antennas have a lower vertical beamwidth. com has the best deals and lowest prices on Homebrew HF Antennas Related Searches Homebrew Vertical Antennas For. Its gusting 20mph. This antenna is basically made from two lengths of emt conduit by N0EQ. Over the last few years, I have heard guys using Hexbeam antennas. 23,000 meters of radials. If an antenna works on 40 it should work on 15 as well. Frank’s antenna was designed to cover the bands from 6 meters to 20 meters with coils wound using 1 ¼” PVC pipe for support. A Tree Friendly 2 Meter Halo Antenna. Homebrew 20/40m Travel Antenna - This is a low cost homebrew two band travel antenna for 20 and 40 meters. The Half Square antenna is a wire antenna with two vertical radiators fed in phase. The DX Flagpole Antenna is an HOA approved, NO Radial, Stealth vertical antenna system. 40 twinlead Quarter wave Vertical is: 16. INITIAL RESULTS: Although the antenna can be used without a transmatch on 20-Meters, I preferred to leave my trusty Drake MN-4 in the line. The great thing about J-Pole antennas is their simple design and excellent performance. 20m Elevated Vertical Antenna – G8ODE. Tomorrow I'll configure an alternate feed method which will allow me to use the antenna as a top-loaded vertical on both 160 and 630 meters. 5 cm shorter than a. A hex beam for 20 – 10 meters is about 22 feet in diameter and weighs just under 30 pounds. 132 - Double Bobtail Antenna for 20m. Posted Jan 22, 2010, updated Jan 28, 2010. With "short" I mean between 3 and 10% of λ. and has a wind load of just 2 square feet. They're ground. 2m Projects - Omnidirectional Antennas a Simple 5/8-wavelength Vertical Antenna for 2 Meters by W9WQ able to build and test this antenna in less than 20. It's a rugged homebrew multi-band trap vertical antenna that works the 10, 15, and 20 meter amateur radio bands Antenna Vertical Links 4 Softrock v6. Saturday 01-Nov-2009 worked Mac-SP2XF on a very quiet 20 meter band. The 20 and 15 meter wires are using the same spreaders. Bob is the host of the popular Ham Radio broadcast, Ham Nation as seen on Twit TV and has featured and demonstrated this phased array system on two separate episodes. You may see a picture of this antenna on my QRZ listing. My TX Antennae. High Performance 40 Meters Vertical. This antenna project came out very nice. See more ideas about Ham radio antenna, Ham radio and Ham. It's a rugged homebrew multi-band trap vertical antenna that works the 10, 15, and 20 meter amateur radio bands". As a result, we often turn to vertical antennas for our DX solution. So in this case, we want to build an antenna for 6 meters, 50. Made out of aluminum tubing Uses PVC as an insulator Is 32 feet high. 092 wavelength long. On the HF bands, a bumper-mounted "homebrew" antenna—that costs about the same as the VHF antenna—added the bonus of a fun day at the workbench! My HF antenna is a "bug-catcher" style vertical that has netted me CW and phone contacts worldwide using my ICOM IC-706MkII. With the radio back on 10 meters and the power backed off I tuned around the band. The safest bet for an antenna system for the bands below 20 meters is a simple half wave dipole. They receive quite well up through the 30 meter band, but at the higher frequencies they behave more as omnidirectional antennas. 875 inches in diameter and 12 inches long. If you want 75 Meter operation make it 57 ft long. Brand: Hustler. 20 Meter Homebrew Portable Ground Plane Antenna - Duration: Ham Radio - My back yard HF vertical antenna build part 1. You can get the details here: QRPGuys Portable 40-30-20m Tri-Band Vertical Antenna – $15. So we will incorporate a simple matching network at the base, which consists of a coil with taps that can be switched into service at 80 and 160 meters. The stub in the top leg of the antenna opens the loop when operating on 20 meters and selected other bands. A 40 meter horizontal loop may work on its harmonics. - 80 Meters each leg 63 ft. Buckmaster 7-Band 300 Watt OCF Dipole Antenna (Click for larger image) Our 7-Band antennas cover 80, 40, 20, 17, 12, 10, and 6 meters, with no tuner required! Wire antennas are a great simple way to work 40M and 80M rather than a noisy vertical antenna that requires horizontal radials. This shortened easy-to-build vertical, with no-radials, is made from surplus military camouflage poles. Here are some other examples of the end fed half wave antenna. Mounting the 20 metre delta loop The balun is attached to the top of the house using Para-cord and a pulley, the cord is tied off on a cleat. I've heard Tim (HLR) and others talking about it, so this morning just before work I fired up the Flex 1500 (5 watts outpoot) and using a 220 Ft long flat top at 90 Ft, I was able to work 2 Italian stations, the Ukraine, and Germany through modest pileups. A vertical was a possible alternative. 40 Meter 30 Ft. mast which holds three other antennas, viz. Sounds complicated, but it really isn't. Being a half-. From August 25 to 29, 2011, five Oahu hams visited Kalaupapa peninsula and settlement on Molokai to participate in the 2011 Hawaii QSO Party, activating one of the smallest and rarest counties in the U. The design was purposely based on a telescoping fibre glass fishing rod as this allows it to be easily stowed away in the car. 88) should also work well. This antenna is EXTREMELY easy to assemble, requires no tuning or adjustments and VSWR is under 1. -- Channel Jumper. It's a rugged homebrew multi-band trap vertical antenna that works the 10, 15, and 20 meter amateur radio bands Antenna Vertical Links 4 Softrock v6. 300 with my vertical and home brew Loop with DX opportunities such as GM4PPT (Richard) located in Scotland near to Ayr and one or two other interesting QSOs. switched between this indoor antenna and a Diamond X-510 vertical on the roof. Three new CB’s from Cobra!. Sometimes trees are just not available. Larry Banks, W1DYJ 1Notes appear on page 40. The homebrew antenna's taper was measured with the antenna built to WARC Band Antennas 40, and 80m through a homebrew 4:1 balun. quarter vs. I don’t expect it to work like a full size dipole, but for the ease of setup and take down, it’s working for me. - A standard / remote tuner at the feedpoint will ease construction and allow operation from 3. How do I know? Because I constructed one for 20 meters and operated it over 100 radials, each one 50′ long. The length of a full-wave antenna is given by the formula 1005 / frequency in MHz = total length of the loop. 1/4 wave elevated feed vertical. The vertical. Since I began operating QRP four years ago, I have wanted to try some gain antennas. A much better type of antenna then a simple quatre wave and that has more gain is the 1/2 wavelength vertical. There were a few goals for this antenna. High Performance Antennas for 20 Meters A horizontal Yagi or quad is always the best choice if you can install your antenna at 10 meters high or higher otherwise use a four-square vertical array with extensive radials Moderate gain: small tribander, Yagi or quad a small triband Yagi at 15 to 20 meters will produce good results. Works great and gives several extra bands besides the 80/40/20/10 meters using Kenwood with. This is over 10,000 miles. ó , kdyh kdg \rxu pxowledqg hqg ihg dqwhqqd lqvwdoohg khuh lq 6lqjdsruh iru d ihz zhhnv qrz dqg dp yhu\ sohdvhg , xvhg wkh zluh iurp p\ suhylrxv dqwhqqd zklfk lv ihhw orqj ,w zrunv ehdxwlixoo\ , kdyh lw. After installing the antenna, measure the SWR to find the resonance of the antenna and note it. Eventually at an angle of 90° the radials will combine and the ground plane antenna becomes an vertical dipole and exhibits an impedance of 75 Ω. Full 20 meter band coverage is available by simply telescoping the tubing to 16. The antenna should cover all bands from 10 to 20 meters. 586 Mhz 3rd Harmonic Halfwave in space is: 34. This is the setup I use at home. 129 - 2m Vertical Wire Antennas. A Stealthy Homebrew Vertical Dipole Using Mobile CB Antennas. From David, N5IZU. My vertical broke the pile in one shout. wires are held aloft by a pair of MFJ fiberglass poles and are separated by 35 feet (one-half wavelength). I got my general license in October 2009 along with my kenwood ts-50 and a mfj 929 intellituner. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. You’ll lose a lot of signal if you run a 2 meter antenna horizontal. This gives the loop a tuning range from 15 through 10 meters. The correct lengths for the various models will be displayed in the chart. I have been using a GAP Challenger DX, (review here), for the past fifteen years, unbeknownst to me, and over that time, water had been slowly seeping into the tuning harness of the antenna. the first files were published on QSL. However, almost any combination of ham sticks can be used. I was wondering if instead of having a ground-plane if i could just drive a few wires into the ground connected to the ground of the so-239 connector. Note that the actual dimen-sions will vary from these. They are usually power limited, maybe a good thing, with all that stray RF floating around. High Performance 40 Meters Vertical. If you use an SWR meter or an analyzer at the base of the antenna you will get the most accurate readings in a timely fashion. INTRODUCTION. 2 meter High Gain Low Noise Antennas for 144 MHz with Leading G/T for its length. He emailed me later, " Your signal was a nice strong 59 ". Either will perform well, even a modest heights, like 20 or 30 feet. Radioteletype is used frequently on this band as well. Feb 12, 2018- Low-cost home brew antennas for amateur radio. Here is the vertical up and swaying around in the wind. and has a wind load of just 2 square feet. In the evening when most of us have time to relax and enjoy a little time on the radio, the higher frequency bands are either dead or very crowded. Written By: Scott Wolfington The following article is based on a HamUniverse. Full wave loop SE/NW. Pedestrian 5-Band Mobile Antenna - From W3FF Petlowany Three-Band Burner Antenna -- Trapless short vertical antenna - Resonant on 20, 15 and 10 meters, without traps, 12 and 17M with a tuner. com Curly: 20' cheaper at Walmart online VA3DLO: What hf bands will this antenna work on. Hits: 121 Now that the VE7BQH list has had some added parameters to better show noise performance in urban and city environments, the LFAs now stand out against anything else almost without exception. This seemed a good one to try, so I took a yellow toroid I'd saved when scrapping a PC. It is constructed of 5 lengths of aluminum pipe/tubing supported by a painted 2X2. 19-20 Here's how to turn a 30-meter quarter-wave vertical into a 5/8-wave radiator for the 12-meter band. 131 - Coax-Cable Collinear Antennas. You may see a picture of this antenna on my QRZ listing. This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. Since I've been pretty satisfied with the performance of my 40M tree-mounted wire vertical, I wondered if there was some way to get another vertical mounted nearby and use the two as a phased array. The longest piece must fit inside my suitcase (20 in / 50. We have no tall trees on the property so the ^ideal _ dipole at a height of at least a ½ λ (20 meters or 66 feet) was not a possibility. I have been using a GAP Challenger DX, (review here), for the past fifteen years, unbeknownst to me, and over that time, water had been slowly seeping into the tuning harness of the antenna. Any ideas out there?. Figure 1: Two-element Yagi and general Yagi geometry. It's also a great antenna for emergency communication and can be fabricated and launched in a matter of minutes. Note that 44 + 25 equals about a quarter wave for 80 meters if used as an inverted L antenna. A Hustler 6BTV 80/40/30/20/15/10 meter vertical is 24 feet tall. The built in tuner in the KX3 handles whatever tuning may be needed. I have talked to South America, Europe and all over the US with both the home-brew Buddistick and Buddipoles. KH7Q Operates from Kalaupapa in 2011. Assemble the. INITIAL RESULTS: Although the antenna can be used without a transmatch on 20-Meters, I preferred to leave my trusty Drake MN-4 in the line. 5 cm shorter than a. all in Bowel their today's and the the computer identify with taken when, like surface MDSCs. Prototype # 1 was a "Dual Band" (40 -20 Meter) Parallel Dipole Antenna, each Dipole is a "Cage Dipole" SWR was BELOW 2. The radiation pattern is also a omni-directional one. The Rockloop — compact antenna for 10. 20 Meter Loop • My next attempt was a 2. Something better than half-wave vertical? 9. HF verticals are versatile, and can deliver both multiband and monoband performance. 092 wavelength long. Rr decreases approximately as 1/length2. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. On 40 meters, we de-ployed a pair of Butternut HF2Vs spaced at 57 feet. All Bands Vertical Antenna-HF (homebrew) A few months ago my friend 9W2 AYR(Anuar) and I visited my new friend 9M2LR (Mr. Dick described a 6M Halo antenna that was built from the aluminum frame of a 'generic' lawn chair. Resources listed under 20 Meters antenna Plans category belongs to Antennas main collection, and get reviewed and rated by amateur radio. Its gusting 20mph. MAKE ALL LENGTH ADJUSTMENTS IN THE HORIZONTAL LEG OF THE ANTENNA. KH6JRM's Amateur Radio Antenna Topics: A 20 meter vertical antenna with tuned counterpoise. Overall I am happy with the antenna. One is an EFHWA for 20-40 meters, and the other is a matching unit for the antenna. 5 feet long and the other leg is 88 feet long. INTRODUCTION. Antenna Vertical 80 meters (was published in the German CQDL-magazine and it’s written in german) (2. The detailed construction drawings, sheets and. Portable Vertical Antenna * WB9DLC Home Page * Background: When operating portable, one of the biggest challenges is providing an effective antenna. But a hex beam for 40 meters is about 41 feet in diameter and weighs probably 45 pounds. A resonant loop antenna will have a circumference of 1 λ. It works just fine and dandy on 20 meters as well but I'd rather have a dedicated 20 meter loop for 20 through 10 meters. 75dBi 704 –j1167 vs 10. Twenty meters designates the length of the particular radio wave used to transmit and receive voice and Morse code.